Shaving implement



Sept. 26, 1939. J MUROS 2,174,039

SHAVING IMPLEMENT Filed March 24, 1938 ATTORN EY Patented Sept. 26, 1939UNITED STATES PATENT OFFICE 2,174,039 SHAVING IMBLEMENT ApplicationMarch 24,

Claims.

This invention relates to shaving implements of the type employingrelatively movable shearing members and being designed for shavingwithout the use of lather. The invention consists in an 5 improvedconstruction for the stationary shearing member in those implementswhich include in their structure a thin resilient metal sheet which isperforated to present the stationary shearing edges.

In an endeavor to reduce the thickness of the stationary shearing memberand so improve the efficiency and close-shaving characteristics of theimplement, the attempt has been made to utilize a thin, perforated steelsheet which is not of itself sufficiently rigid to be self-sustainingbut must be secured to a supporting frame in order that it may be giventhe curvature desired in the implement. This steel sheet is of necessitysomewhat resilient since it must be tempered to give it the requirededge-holding properties. The attempt has been made heretofore to securesuch a steel sheet to its supporting frame by soldering or braizing butthis manner of attachment has not proved to be satisfactory or reliablein continued use of the implement, since for one reason or another, theconnecting medium deteriorates under the constant tendency of the steelsheet to straighten. The result is that after variable periods of usethe steel sheet becomes detached and if the user overlooks thiscondition he is likely seriously to damage himelf by coming in contactwith the oscillatory cutter which is ordinarily completely guarded bythe perforated steel sheet.

dinal members connected by curved or arched' ribs, and a thin resilientshearing plate conformed to the curvature of the arched ribs, togetherwith means for positively clamping the edges of the plate to, oradjacent to, the longitudinal members of the frame.

While this is the broad conception of my inven- For example, the innerface of the frame may be provided with projecting shoulders and theresilient plate may be conformed to the ribs and sprung at its edgesinto engagement with the shoulders, thereby becoming resiliently interAn object of the present invention is to remedy' tion it may be put intopractice in various ways.

1938, Serial No. 197,893

locked with the frame without the intervention of any connecting mediumsuch as solder. Under such conditions, the resilient plate will maintainits position indefinitely since its tendency to straighten out has theeffect only of in tensifying the interlocking engagement between theplate and the frame. 'As an alternative construction, the longitudinalmembers of the frame may be slitted and the marginal edges of theresilient plate maybe fitted into these slits and maintained therein bya swaging displacement of the metal of the frame, or as anotheralternative, a separate anchor or clip may be provided for interlockingmechanically with the frame and with the marginal edges of the sheetsteel shearing member. As already intimated the exact mechanicalconstruction employed is of secondary importance so long as aninterlocking configuration i s employed by which, the edges of the steelsheet and the frame are mechanically connected while the body of thesteel sheet conforms to the curvature of the frame.

These and other features of the invention will be best understood andappreciated from the fol-' lowing description of a preferred embodimentthereof, selected for purposes of illustration and shown in theaccompanying drawing, in which;-

Fig. 1 is a fragmentary sectional view on an enlarged scale of a dryshaving implement embodying my invention :in one satisfactoryembodiment;

Fig. 2 is a view in perspective, on a scale reduced as compared to thatof Fig. 1 but still enlarged in respect to the actual implement, showingthe complete stationary shear member;

Fig. 3 is a'fragmentary view in central crosssection of the member shownin Fig. 2 buton a greatly enlarged scale;

Fig. 4 is asectional view on the scale of Fig. 1' illustrating incross-section a stationary shear member of modified construction;

Figs. 5 and 6 are views in plan and" elevation respectively of themember shown in Fig. 4 but on a somewhat reduced scale;

Fig. 7 is a view in cross-section illustrating a third construction ofstationary member embodying my invention;

Fig. 8 is a view in perspective of one of the clip members used with theframe of Fig. '7; and

Fig. 9 is a fragmentary view in section showing a portion of Fig. 7 on agreatly enlarged scale.

The implement as shown in Fig. 1 comprises a casing ll] of Bakelite orany suitable mouldable material which serves as a handle for theimplement and also as a housing for its driving motor. The casing I0 isrectangular in crosssection and provided at its upper end with a skel-'eton supporting frame having semi-circular end ribs connecting spacedelongated side members |2. An intermediate curved rib is also shown aslocated midway between the ends of the frame and conforming in thecurvature of its upper face to the curvatureof the end ribs Shaped tothe ribs of the supporting frame and conforming to the transverseexterior curvature thereof is a thin, resilient perforated steel sheetl3. The sheet is provided with a multiplicity of perforations M, theedges'of which form the stationary shearing edges of the implement and,as already seen, the perforated sheet is sufficiently hardened andtempered to insure that it has good edge-holding properties. By itstemper it is rendered sulficiently resilient so that it tendsnormally toassume a flat condition and, therefore, it has to be permanentlyconfinedin order to maintain the desired transversely curved condition.In addition to the shearing perforations the sheet |3 has a row oflarger perforations along each of its longitudinal edges.

As herein shown the sheet steel I 3 is secured to the supporting frameby having its longitudinal the marginal edges of the steel sheet aremechanically interlocked to its supporting frame and are permanentlyretained in position without reliance upon a connecting medium of anykind.

The assembled frame and sheet l3 form a rigid self-sustaining unit whichmay be handled conveniently' and attached to or detached from the casing|3 of the implement. To this end the op posite side members of thesupporting frame are provided with notches H for the reception ofmovable clamping arms |8 carried by the casing l0.

A portion of the motor 20 of the implement is shown in Fig. 1 as is alsothe movable shearing member of the implement which comprises a fiatblade 25 shaped at its edge to clear the inter mediaterib of thesupporting arm. The blade 25 is loosely held in a bar 23 which isprovided at opposite ends with trunnions 24 and journaled in transversearms 26 which form part of. the casing. The bar 23 is provided with apair of downwardly extending longitudinal plates 22 spaced to receivebetween them a cylindrical eccentric member 2| projecting from the endof the rotor of the motor. When the motor is energized the carrier bar23 is rocked back and forth and the blade 25 is swept transverselyacross the arcuate portion of the stationary shearing member l3. ,Itwill be understood that the implement is moved across the face of theuser and that those hairs which enter the aperture M are sheared by thecooperating shearing action of the movable blade 25 with the stationaryshearing member 3.

In the embodiment of the invention shown in Figs. i, 5 and 6, thesupporting frame is of skeleton construction and comprises elongatedside inner surface of the ribs 3| and 32 instead of their outer surfaceas in the embodiment of the invention already described. To this end,the inner arcuate surfaces of the three ribs are brought into a singlecylindrical surface and each of the longitudinal members 30 is providedwith an inwardly projecting rib 33 forming a reentrant longitudinalshoulder extending for the full length of the frame at opposite sidesthereof.

The shearing member comprises a thin flexible sheet 34 rectangular inshape and provided with a multiplicity of small perforations arranged inrows in two substantially rectangular panels and having also a row oflarger perforations spaced within its longitudinal marginal edges. Thesheet 34 is of such width that it may be forced into conformity with theinner curved faces of the ribs 3| and 32 and snapped into place aboutthe ribs 33 so that it is maintained by its resiliency within thesupporting frame and forms therewith a selfsustaining unit. If desired,the longitudinal edges of the sheet 34 may be notched to, receive atongue or projection upon one or both of the ribs 33 thereby locking thesheet against longitudinal displacement. In this construction there isno tendency for the sheet to disengage itself from the supporting framesince its resilient tendency to straighten causes it to engage the innercylindrical surface of the frame. It may, however, be disengaged fromthe frame by having one of its edges sprung over the rib 33 andthusreplacement is facilitated when the shearing edges of the perforationshave become dulled by use. The thickness of the intermediate rib 32 isreduced so that it constitutes no substantial obstruction when theimplement is moved across the face of the user. F

In the embodiment of the implement shown in Figs. 7, 8 and 9 thesupporting frame comprises longitudinal side members 40 connected bysemicircular transverse ribs 4|. 0f the ribs 4| lie in a singlecylindrical surface and impart their shape to the flexible shearingmember when the latter is conformed to them. This member comprises athin flexible .sheet 42, substantially rectangularsin shape andperforated in accordance with the pattern similar to that shown in Fig.5. It is conformed to the supporting frame with its longitudinalmarginal edges registering with the members 40 of the frame. It ismechanically interlocked with these members by means of elongated clips43 formed of flexible sheet metal and shaped to embrace the frame;

members 40. One edge of the clip is provided with intumed teeth 44 andwhen the clip has been positioned upon the members 40 of the frame withthe flexible sheet 42 overlying the members 40 the walls of the clip 43are bent so that the teeth 44 extend inwardly through the marginalapertures of the plate. In Fig. 7 the clip at the right-hand side of thesupporting frame is shown as positioned but not closed into interlockingengagement While the clip at the left side of the frame is shown as bentinto its clamping position with the teeth 44 engaging the upper surfaceof the frame member 40. Preferably and as herein shown the inner wall ofthe clip is permanently secured, as by welding, to the frame and incompleting the device it is only necessary to position the sheet 42 andbend inwardly the outer wall of the clip. The thin sheet 42 is thussecurely held in shaving position but it may be detached" forreplacementby springing the outer wall of the clip sufliciently to disengage themarginal perforations of the clip. It will be understood that the unitThe outer surfaces shown in Figs, 4-6 and the unit shown in Figs. 7-9are intended for use in an implement of the character illustrated inFig. 1.

Having thus disclosed my invention and described a preferred embodimentthereof for purposes of illustration but not by way of limitation, Iclaim as new and desire to secure by Letters Patent:

1. A shaving implement comprising a supporting frame having longitudinalmembers connected by curved ribs, a thin resilient shearing plateconformed to the curvature of said ribs and extending at its edges intoproximity to the longitudinal members of the frame, means for positivelyclamping the plate to said longitudinal members, and a cooperatingmovable shearing member.

2. A shaving implement comprising a supporting frame having longitudinalmembers connected by arched ribs, a thin resilient shearing plate ofrectangular shape conformed to the curvature of said ribs andinterlocked at its edges with the longitudinal members of the frame, anda cooperating movable shearing member.

3. A shaving implement comprising a supporting frame having longitudinalmembers connected by arched ribs and having parallel longitudinalshoulders in opposite sides of its internal surface, a thin resilientshearing plate yieldingly conformed to the curvature of said ribs andheld in place thereagainst by engagement at its edges with saidlongitudinal shoulders, and a cooperating movable shearing member.

4. A shaving implement comprising a support+ ing frame havinglongitudinal side members connected by curved ribs and provided with ashoulder in the inner face of each side member, a thin resilientapertured plate yieldingly conformed to the inner face of said ribs andsprung at its edges into the shoulders of the side members, and meansfor holding said plate against longitudinal shifting with respect to theframe and a cooperating movable cutter.

5. A shaving implement comprising a skeleton supporting frame having aninner transversely curved surface and inwardly projecting shoulders atits opposite sides, and a thin resilient shearing plate interlocked withsaid shoulders and pressed by its own resiliency into conformity to thecurved surface of said frame.

JOSEPH MUROS.

